ball up 

1. a command by which someone tricks another at looking in the direction of the hand in an "OK" sign, by which the perpetrator must clench their fist to allow the fooling party to strike it hard in a slapping motion.

2. a general expression used when circumstances differ greatly from expectations

1. <person #1 holds up OK sign in the air>
<person #2 looks at it>
person #1: "BALL UP!!"
<person #2 hold out hand in clenched fist to be slapped>

2. guy 1: "Man, I thought for sure I was gonna get some tonight, but all I did was drop $50 on her dinner."
guy 2: "Oh, ball up!"

ball up by maryc April 28, 2005

ball up 

1. to play basketball 2. to smoke weed

you tryna go ball up?
yea lets go ball up

ball up by Natt Turner February 3, 2021

ball up 

transitive verb
In basketball, to easily beat an opponent, typically by way of vastly superior skill.
Possibly derives from "show up" in the sense of embarrassing others via a display of superior ability.

Throw me the rock, dog, I'm 'onna ball this cat up right now.

Boy, LeBron would ball you up like nothin'.

ball up by osofuchi March 17, 2005

Ball Up 

To play Basket ball in the street mostly in the neighborhood with friends/siblings

My uncle and I ball up every time he comes to a family reunion and he always get frost scores

Ball Up by alleniversonmydad665 June 27, 2017

Ball up 

To eat sweet food.

Yo Ima bout to ball up you tryna come with me?
Yeyee I need to ball rn still.

Ball up by saltyyy.aaa November 30, 2019

Ball up 

Playing basketball

“Aye bro.. you tryna go ball up”

Ball up by Ball up October 1, 2020

ball-up 

synonymous to man-up
means basically get some balls, step up, quit bein a bitch & take care of business.

dude inconveniencin another dude's bitch
bro-u gonna let him talk to ur girl like that? ball-up an rock that muthafuckas dome.

ball-up by hayzrukiz February 29, 2008